| 甲黄隆在有机溶剂中的光解 |
| 摘要点击 3943 全文点击 2242 投稿时间：1998-08-31 |
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| 中文关键词 光解 光解动力学 磺酰脲 甲黄隆 反应机理 |
| 英文关键词 photolysis kinetics sulfonylurea metsulfuron-methyl reaction mechanism |
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| 中文摘要 |
| 以中压汞灯为光源,研究了甲黄隆在甲醇和丙酮等有机溶剂中的光解动力学,结果表明均为一级反应。甲黄隆在甲醇中的光解速率与在水中相差不大,而丙酮可明显促进其光解。甲黄隆在甲醇中光解先断裂脲桥,生成磺酰胺和取代三嗪,磺酰胺继续光解生成苯甲酸甲酯和微量的硫酚。 |
| 英文摘要 |
| Photodegradation behaviors of metsulfuron-methyl in methanol and acetone were studied with the irradiation of mediumpressure mercury lamp.The primary degradation of metsulfuron follows a pseudo-first-order kinetics both in methanol and acetone.The degradation rate in methanol is similar to that in water,while the rate in acetone is accelerated.In methanol,metsulfuron is phtolyzed to methyl 2-(aminosulfonyl)benzoate and 2-methoxy-4-methyl-6-amino-1,3,5-triazine,then the former product is degraded to methyl benzoate and methyl 2-(sulhydryl)benzoate. |
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